Magnetic latching relay convenient and reliable to install

Abstract

The utility model belongs to the technical field of magnetic latching relays, and particularly relates to a magnetic latching relay convenient and reliable to install, which comprises a base and a shell in close fit with an upper cover, a coil assembly, an armature assembly, a first contact piece assembly and a second contact piece assembly are arranged in the base, and accurate linkage is realized by means of a linkage plate. A fixed clamping block of the base cooperates with a shielding cover and a slope groove, so that the assembly convenience and firmness are greatly improved, external expansion of an alternating magnetic field during working of the coil is tightly blocked, peripheral sensitive elements such as a microcontroller and a sensor are prevented from being interfered, the electromagnetic compatibility of a circuit system is enhanced, and the reliability of the circuit system is improved. The inclined chamfers of the assembly positioning holes enable workers to easily and losslessly assemble the contact pieces, the cost is reduced, the product consistency is guaranteed, the grooves at the contact points are beneficial to heat dissipation, the shell is reinforced by the structure reinforcing ribs, the service life is prolonged in all directions, the operation stability is improved, and the comprehensive advantages of the utility model on the basis of reliable structure and convenient installation are shown.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic latching relay technology, specifically a magnetic latching relay that is easy to install and reliable. Background Technology

[0002] A magnetic latching relay is an automatic control electrical appliance with wide applications in many fields. In smart home systems, magnetic latching relays can be used to control the on / off state of smart lights. In the field of industrial automation, magnetic latching relays also play an important role and can be flexibly applied to circuits with different power requirements.

[0003] Existing magnetic latching relays generally consist of an iron core, coil, armature, and contact system. Their working principle is based on electromagnetic induction and the magnetic force of a permanent magnet. When the coil is energized, it generates a magnetic field that attracts the armature to move, thereby causing the contact system to operate and realize the connection or disconnection of the circuit. They are widely used in various automatic control circuits.

[0004] Current magnetic latching relays suffer from the following drawbacks: In conventional methods, the shielding cover assembly process is cumbersome and lacks positioning accuracy, making precise installation difficult. This results in a loose fit between the relay and its base / cover, failing to effectively isolate the alternating magnetic field. In complex circuit board integration scenarios, the leaked magnetic field can freely interfere with surrounding sensitive electronic components such as microcontrollers and sensors, causing frequent abnormal fluctuations in signal transmission and frequent malfunctions. The entire circuit system has fragile electromagnetic compatibility, making it difficult to ensure stable and coordinated operation of components, severely impacting system reliability and operating efficiency. Furthermore, the overall contact system has poor reliability, making it difficult to guarantee the relay's on / off control accuracy. This severely restricts its effective application in demanding environments requiring stability and precision, failing to meet the expectations of modern electronic equipment for high-quality, high-reliability relay operation. Therefore, this paper proposes a magnetic latching relay that is easy to install and reliable. Utility Model Content

[0005] To overcome the shortcomings of existing magnetic latching relays, a magnetic latching relay that is easy to install and reliable is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The magnetic latching relay of this utility model is easy to install and reliable, including a housing composed of a base and a top cover. A first contact assembly and a second contact assembly are assembled in the base. An armature assembly that can reciprocate and pivot to switch the first contact assembly and the second contact assembly on and off is also assembled in the base. A coil assembly for driving the armature assembly is assembled in the base. A linkage plate for linking the armature assembly with the first contact assembly and the second contact assembly is slidably assembled in the base. A shield for isolating the coil assembly is assembled on the outside of the housing. Two fixing blocks for guiding and fixing the shield are arranged in a mirror image on the base. One end of the fixing block is an inclined guide part for facilitating the assembly of the shield. A fixing hole is opened on the shield. A fixing post that cooperates with the fixing hole is fixedly installed on the top cover. A ramp groove is opened on one side of the shield to facilitate the assembly of the fixing hole onto the fixing post.

[0007] Preferably, the first contact assembly includes a first stationary contact and a first movable contact. The first stationary contact is provided with a first stationary contact point, and the first movable contact is fixedly provided with a first spring. The first spring is provided with a first movable contact point corresponding to the first stationary contact point. The second contact assembly includes a second stationary contact and a second movable contact. The second stationary contact is provided with a second stationary contact point, and the second movable contact is fixedly provided with a second spring. The second spring is provided with a second movable contact point corresponding to the second stationary contact point.

[0008] Preferably, the base and the top cover are respectively provided with assembly positioning holes for assembling the first stationary piece, the first moving piece, the second stationary piece, and the second moving piece, and the assembly entrance of the assembly positioning hole is provided with a chamfer to facilitate assembly.

[0009] Preferably, the inner walls of the base and the top cover are fixedly provided with reinforcing ribs at the assembly positioning holes.

[0010] Preferably, the second stationary piece includes a bent portion, the bent portion being perpendicular to the second moving piece. A receiving seat for accommodating the bent portion is fixedly provided on the base. A cover plate is mounted on the receiving seat. A fixing rib for assisting in fixing the first stationary piece is fixedly provided on the cover plate. An insertion portion for limiting the bending portion is also provided on the cover plate.

[0011] Preferably, the base mounting surface is fixedly provided with a splicing part, and the inner wall of the upper cover is provided with a splicing groove that matches the splicing part.

[0012] Preferably, the mounting surface of the base is provided with inserts at equal intervals, and the upper cover is provided with slots that cooperate with the inserts.

[0013] Preferably, the inner walls of both the base and the top cover are provided with several grooves at the first stationary contact point, the first moving contact point, the second stationary contact point, and the second moving contact point.

[0014] Preferably, both the inner walls of the base and the top cover are fixedly provided with a number of structural reinforcing ribs.

[0015] The beneficial effects of this utility model are:

[0016] 1. High-efficiency electromagnetic shielding structure enhances system stability: The shielding cover, combined with a unique fixing clamp and ramp groove design on the base, effectively isolates the alternating magnetic field generated during the operation of the coil assembly. The inclined guide part of the fixing clamp not only facilitates quick positioning of the shielding cover during initial assembly, but its spacing design, slightly smaller than the width of the shielding cover, also ensures the reliability after assembly. The ramp groove enables precise micro-adjustment, ensuring that the shielding cover and the fixing post of the top cover are accurately engaged. This entire structure significantly improves the electromagnetic shielding effectiveness, avoiding electromagnetic interference to sensitive electronic components such as microcontrollers and sensors. In complex circuit board environments, it effectively ensures the electromagnetic compatibility and reliability of the overall circuit system, reduces signal abnormalities and equipment malfunctions caused by electromagnetic interference, and maintains the coordinated and stable working state of all electronic components.

[0017] 2. Optimized contact assembly design ensures electrical performance and ease of assembly: The beveled design of the assembly positioning holes greatly optimizes the electrical performance of the product and the production process. The beveled corner acts as an efficient "guide funnel," greatly simplifying the contact assembly process. Workers can easily and quickly complete the assembly, avoiding contact deformation and damage caused by forced assembly, ensuring product consistency and yield, effectively controlling manufacturing costs and quality control difficulties, and meeting the needs of large-scale industrialized high-efficiency production.

[0018] 3. Fixed layout of stationary contact plate enhances overall stability: Compared with the traditional planar fixing method, this utility model makes full use of spatial geometric features to achieve compact and stable fixing in a limited space, which greatly enhances the ability to resist external interference, ensures that the stationary contact plate and the moving contact plate maintain precise cooperation under the action of complex external forces such as electromagnetic force and vibration, reduces faults such as poor contact caused by loose parts, improves the overall contact plate system coordination stability, and ensures accurate and reliable on / off control of the relay. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a perspective view of the internal structure of the base of this utility model;

[0021] Figure 2This is a three-dimensional structural view of the base of this utility model;

[0022] Figure 3 This is a three-dimensional structural view of the entire utility model;

[0023] Figure 4 yes Figure 3 A three-dimensional view of the structure from another perspective;

[0024] Figure 5 yes Figure 4 Enlarged view of the structure at point A in the middle;

[0025] Figure 6 This is an exploded structural diagram of the base and the top cover;

[0026] Figure 7 This is an exploded structural diagram of the housing and cover plate;

[0027] Legend:

[0028] 1. Housing; 101. Base; 1011. Receiving seat; 10111. Cover plate; 101111. Fixing rib; 101112. Insertion part; 1012. Splicing part; 1013. Insert block; 102. Top cover; 1021. Fixing post; 1022. Splicing groove; 1023. Slot; 3. Coil assembly; 4. First contact assembly; 401. First stationary contact; 4011. First stationary contact; 402. First moving contact; 4021. First spring; 40211. First moving contact 5. Second contact assembly; 501. Second stationary contact; 5011. Second stationary contact; 5012. Bending part; 502. Second moving contact; 5021. Second spring; 50211. Second moving contact; 6. Armature assembly; 7. Linkage plate; 8. Shielding cover; 801. Fixing hole; 802. Inclined groove; 9. Fixing clamp; 901. Inclined guide part; 10. Assembly positioning hole; 1001. Chamfer; 1002. Reinforcing rib; 11. Groove; 12. Structural reinforcing rib. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Specific implementation examples are given below.

[0031] Please see Figures 1-7The present invention discloses a magnetic latching relay that is easy to install and reliable. It includes a housing 1 consisting of a base 101 and a top cover 102. A first contact assembly 4 and a second contact assembly 5 are assembled inside the base 101. An armature assembly 6, which can reciprocate and pivot to switch the first contact assembly 4 and the second contact assembly 5 on and off, is also assembled inside the base 101. A coil assembly 3 for driving the armature assembly 6 is assembled inside the base 101. A linkage plate 7 for linking the armature assembly 6 with the first contact assembly 4 and the second contact assembly 5 is slidably assembled inside the base 101. An external mounting plate for... The shielding cover 8 of the isolation coil assembly 3 has two mirror-image fixing blocks 9 on the base 101 for guiding and fixing the shielding cover 8. One end of each fixing block 9 is an inclined guide 901 to facilitate the assembly of the shielding cover 8. The shielding cover 8 has a fixing hole 801. The upper cover 102 is fixedly provided with a fixing post 1021 that mates with the fixing hole 801. One side of the shielding cover 8 has a ramp groove 802 to facilitate the assembly of the fixing hole 801 onto the fixing post 1021. During operation, in the assembly of the shielding cover 8, the inclined guide 901 of the fixing block 9 on the base 101 is used to guide the assembly. Its design, similar to a "guide ramp," guides the shielding cover 8 to slide quickly and accurately into the approximate predetermined position during initial assembly, reducing assembly difficulty and alignment accuracy requirements. Furthermore, the distance between the two fixing blocks 9 is slightly smaller than the width of the shielding cover 8, making the shielding cover 8 more securely assembled between the fixing blocks 9. As the shielding cover 8 further conforms to the base 101, its fixing holes 801 move relative to the ramp groove 802. The ramp groove 802 acts as a fine-tuning and guiding mechanism until the fixing holes 801 are precisely aligned with the fixing posts 1021 of the upper cover 102, completing the fastening and fixing, and achieving alignment. The electromagnetic shielding of coil assembly 3, with shielding cover 8, effectively blocks the outward diffusion of the alternating magnetic field generated by coil assembly 3 during operation, preventing electromagnetic interference to surrounding sensitive electronic components. For example, on complex circuit boards, it avoids interference with the normal operation of nearby microcontrollers, sensors, and other components, improving the electromagnetic compatibility and reliability of the overall circuit system. In terms of assembly convenience, the fixed clamping block 9 and the ramp groove 802 significantly simplify the assembly process of shielding cover 8, reducing assembly time and the skill requirements for workers, which is conducive to efficient and high-quality production, reducing production costs and assembly error rates, and meeting the needs of large-scale industrial production.

[0032] Furthermore, the first contact assembly 4 includes a first stationary piece 401 and a first movable piece 402. The first stationary piece 401 is provided with a first stationary contact 4011, and the first movable piece 402 is fixedly provided with a first spring 4021. The first spring 4021 is provided with a first movable contact 40211 corresponding to the first stationary contact 4011. The second contact assembly 5 includes a second stationary piece 501 and a second movable piece 502. The second stationary piece 501 is provided with a second stationary contact 5011, and the second movable piece 502 is fixedly provided with a second spring 5021. The second spring 5021 is provided with a second movable contact 50211 corresponding to the second stationary contact 5011. Both the base 101 and the upper cover 102 have corresponding openings for assembling the first stationary piece 401. The first moving piece 402, the second stationary piece 501, and the assembly positioning holes 10 of the second moving piece 502 are provided. The assembly entrance of the assembly positioning holes 10 is provided with a chamfer 1001 to facilitate assembly. During operation, each contact enters from the assembly entrance of the assembly positioning hole 10. The chamfer 1001 guides the contact smoothly into the predetermined installation position in the hole by using its inclined side as a "funnel". This facilitates subsequent fixing with the internal structure of the base 101 and the top cover 102. The assembly positioning holes 10 and the chamfer 1001 greatly optimize the contact assembly process. Workers can easily and quickly insert the contact into the corresponding position, improve the assembly speed, reduce problems such as contact deformation and damage that may be caused by forced assembly, ensure product consistency and yield, and reduce manufacturing costs and quality control difficulties.

[0033] Furthermore, reinforcing ribs 1002 are fixedly provided on the inner walls of the base 101 and the upper cover 102 at the assembly positioning hole 10. During operation, throughout the entire relay operation cycle, under conditions such as vibration during transportation, mechanical stress generated by long-term frequent opening and closing actions, or accidental impacts occasionally applied by the external environment, the reinforcing ribs 1002, as a local reinforcement structure, strengthen the strength and rigidity of the material around the assembly positioning hole 10 from a mechanical perspective. Through the continuity and reasonable distribution of the material, the stress is evenly distributed and transmitted to the overall structure of the base 101 and the upper cover 102, avoiding stress concentration at the edge of the assembly positioning hole 10, which could lead to material fatigue. This design significantly enhances the mechanical strength of the assembly positioning hole 10 area, preventing damage such as deformation or even cracking. It stabilizes the mounting foundation of the contact assembly, ensures the relative position accuracy of the contacts during long-term operation, prevents contact loosening or misalignment caused by structural deformation of the base 101 or top cover 102, eliminates potential contact failures, greatly improves the durability and service life of the relay, reduces after-sales maintenance costs, and better adapts to different working conditions. For example, in industrial environments with high vibration and frequent temperature changes, it still ensures the stable cooperation of internal components, maintains stable electrical performance, reduces performance fluctuations caused by mechanical structure failure, and enhances the overall quality stability and reliability of the product.

[0034] Furthermore, the second stationary piece 501 includes a bent portion 5012, which is perpendicular to the second moving piece 502. A receiving seat 1011 for accommodating the bent portion 5012 is fixedly provided on the base 101. A cover plate 10111 is mounted on the receiving seat 1011, and a fixing rib 101111 for assisting in fixing the first stationary piece 401 is fixedly provided on the cover plate 10111. The cover plate 10111 also... A plug-in portion 101112 is provided for limiting the bending portion 5012. During operation, when assembling the second stationary piece 501, the bending portion 5012 of the second stationary piece 501 is first inserted into the receiving seat 1011 of the base 101. The space and geometry of the receiving seat 1011 are used to initially position and support the bending portion 5012. Then, the cover plate 10111 is installed, and the fixing ribs 101111 on the cover plate 10111 are attached by mechanical interference. The side of the first stationary piece 401 is closed, and a lateral fastening force is applied to help stabilize the position of the first stationary piece 401. At the same time, the insertion part 101112 of the cover plate 10111 is precisely inserted into the corresponding position, locking the key part of the bending part 5012, forming a three-dimensional constraint, ensuring that the second stationary piece 501 maintains a stable posture even when subjected to complex external forces such as electromagnetic force and vibration during subsequent operation. It works in conjunction with the movement of the second moving piece 502 to achieve precise on / off control. The structure of the bending part 5012 and the matching receiving seat 1011 and cover plate 10111 optimizes the installation layout of the second stationary piece 501, making full use of space and geometric features to achieve compact and stable fixation in a limited space. Compared with the traditional single-plane fixing method, it enhances the ability to resist external interference. With the help of the cover plate 10111 to fix the first stationary piece 401, it improves the overall stability of the contact plate system and reduces faults such as poor contact caused by a chain reaction due to the loosening of a single component.

[0035] Furthermore, a splicing part 1012 is fixedly provided on the edge of the mounting surface of the base 101, and a splicing groove 1022 that mates with the splicing part 1012 is provided on the inner wall of the upper cover 102. During operation, in the product assembly process, the mounting surface of the base 101 with the splicing part 1012 is facing upwards and aligned with the splicing groove 1022 on the inner wall of the upper cover 102. Due to the precise matching of the shape and size of the splicing part 1012 and the splicing groove 1022, the operator applies slight external force to gradually bring the two together. During the process of the splicing part 1012 sliding and embedding along the splicing groove 1022, The initial positioning and initial fastening are achieved by relying on the mechanical friction and geometric limit between the groove wall and the protrusion until it is fully embedded, thus constructing a stable and closed shell structure 1. This creates a safe and protective space for the internal components. The splicing structure provides an intuitive and precise assembly positioning benchmark, similar to a mortise and tenon joint. Workers can operate efficiently by aligning the parts, reducing the time spent on trial and error and adjustment, speeding up the assembly process, and improving production efficiency. Furthermore, it meets the design precision requirements, ensuring the relative positional accuracy of the base 101 and the top cover 102 after assembly, and avoiding the impact of assembly deviations of the shell 1 on the fit accuracy of the internal components.

[0036] Furthermore, the mounting surface of the base 101 is fixedly provided with inserts 1013 at equal intervals, and the upper cover 102 is provided with slots 1023 that cooperate with the inserts 1013. During operation, when the splicing part 1012 begins to embed into the splicing groove 1022 during the splicing operation of the base 101 and the upper cover 102, the inserts 1013 on the mounting surface of the base 101 are simultaneously aligned with the slots 1023 of the upper cover 102 and inserted. The inserts 1013 and the slots 1023 fit together, realizing secondary fastening and precise positioning, strengthening the overall connection between the base 101 and the upper cover 102. The inserts 1013 and the slots 1023 cooperate as an auxiliary fastening means, working together with the splicing structure to enhance the connection strength and stability between the base 101 and the upper cover 102 from multiple directions and levels, forming a "multiple locking" effect. When resisting external impacts and vibrations, it can better maintain the integrity of the housing 1, prevent internal components from being affected by the loosening of the housing 1, and ensure the long-term reliable operation of the relay.

[0037] Furthermore, the inner walls of both the base 101 and the top cover 102 are provided with several grooves 11 at the first stationary contact 4011, the first moving contact 40211, the second stationary contact 5011, and the second moving contact 50211. During operation, when the relay operates frequently, the contacts generate Joule heat due to the current passing through them during opening and closing. Especially when disconnecting a high-current load circuit, the instantaneous release of energy causes the contacts and surrounding areas to heat up rapidly. The grooves 11 form several "miniature heat dissipation channels." The grooves 11 increase the contact surface area between the contacts and the surrounding air. Compared to a flat inner wall, more heat can be transferred to the air through heat conduction, promoting rapid heat dissipation and preventing heat from continuously accumulating in the local area of ​​the contacts. This effectively reduces the contact temperature, maintains the stability of its working performance, slows down the deterioration of material properties caused by overheating, extends the service life of the contacts and the entire relay, and significantly improves the reliability and durability of the relay.

[0038] Furthermore, the inner walls of both the base 101 and the top cover 102 are fixedly provided with several structural reinforcing ribs 12. During operation, the relay faces various complex working conditions throughout its entire life cycle, such as repeated pulling and attraction of electromagnetic forces to generate vibrations that are transmitted to the housing 1; external vibrations and impacts acting on the product; and thermal expansion and contraction caused by the heat generated by the internal components, resulting in stress. Based on mechanical principles, the structural reinforcing ribs 12 optimize the stress transmission path by changing the local and overall stiffness and strength distribution of the housing 1. When external forces are applied, the structural reinforcing ribs 12 act as a "mechanical skeleton," dispersing and guiding the concentrated force to the large-area structure of the housing 1, avoiding local stress exceeding the limit and causing material yielding and fracture, maintaining the stability of the geometry of the housing 1 and the installation space of the internal components, and enhancing the product's market competitiveness and application value.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A magnetic latching relay that is easy to install and reliable, characterized in that: The housing (1) comprises a base (101) and a top cover (102). A first contact assembly (4) and a second contact assembly (5) are assembled within the base (101). An armature assembly (6) is also assembled within the base (101) and is capable of reciprocating and pivoting to switch the first contact assembly (4) and the second contact assembly (5) on and off. A coil assembly (3) for driving the armature assembly (6) is assembled within the base (101). A linkage plate (7) for linking the armature assembly (6) with the first contact assembly (4) and the second contact assembly (5) is slidably assembled within the base (101). The shield (8) for isolating the coil assembly (3) is externally mounted. Two fixing blocks (9) for guiding and fixing the shield (8) are arranged in a mirror image on the base (101). One end of the fixing block (9) is an inclined guide (901) to facilitate the assembly of the shield (8). The shield (8) is provided with a fixing hole (801). The upper cover (102) is fixedly provided with a fixing post (1021) that cooperates with the fixing hole (801). The shield (8) is provided with a ramp groove (802) on one side to facilitate the assembly of the fixing hole (801) onto the fixing post (1021).

2. The magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The first contact assembly (4) includes a first stationary contact (401) and a first movable contact (402). The first stationary contact (401) is provided with a first stationary contact (4011). The first movable contact (402) is fixedly provided with a first spring (4021). The first spring (4021) is provided with a first movable contact (40211) corresponding to the first stationary contact (4011). The second contact assembly (5) includes a second stationary contact (501) and a second movable contact (502). The second stationary contact (501) is provided with a second stationary contact (5011). The second movable contact (5021) is fixedly provided with a second spring (5021). The second spring (5021) is provided with a second movable contact (50211) corresponding to the second stationary contact (5011).

3. The magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The base (101) and the top cover (102) are respectively provided with assembly positioning holes (10) for assembling the first stationary piece (401), the first moving piece (402), the second stationary piece (501), and the second moving piece (502). The assembly entry of the assembly positioning hole (10) is provided with a chamfer (1001) to facilitate assembly.

4. The magnetic latching relay that is easy to install and reliable according to claim 3, characterized in that: The inner walls of the base (101) and the top cover (102) are fixedly provided with reinforcing ribs (1002) at the assembly positioning hole (10).

5. A magnetic latching relay that is easy to install and reliable according to claim 3, characterized in that: The second stationary piece (501) includes a bent portion (5012), which is perpendicular to the second moving piece (502). A receiving seat (1011) for accommodating the bent portion (5012) is fixedly provided on the base (101). A cover plate (10111) is assembled on the receiving seat (10111). A fixing rib (101111) for assisting in fixing the first stationary piece (401) is fixedly provided on the cover plate (10111). A plug-in portion (101112) for limiting the bending portion (5012) is also provided on the cover plate (10111).

6. A magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The base (101) has a splicing part (1012) fixedly provided on the edge of the mounting surface, and the inner wall of the upper cover (102) has a splicing groove (1022) that matches the splicing part (1012).

7. A magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The mounting surface of the base (101) is fixedly provided with inserts (1013) at equal intervals, and the upper cover (102) is provided with slots (1023) that cooperate with the inserts (1013).

8. A magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The inner walls of both the base (101) and the top cover (102) are provided with several grooves (11) at the first stationary contact (4011), the first moving contact (40211), the second stationary contact (5011), and the second moving contact (50211).

9. A magnetic latching relay that is easy to install and reliable according to claim 1, characterized in that: The inner walls of both the base (101) and the top cover (102) are fixedly provided with several structural reinforcing ribs (12).

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